Cooking Timer using PIC16F819 microcontroller

This is a school project but I thought it can be fun to all of you cooking people out there, that still use old stoves without timers.
The timer uses different formula for meat, chicken or egg, but also has a separate timer that can be activated manually.

Meat cooking time formula:
1 pounds – 35 min
2 pounds – 45 min
Every extra pound add 15 min
*500f for 15 min. buzzer bips once. than 380f for the rest of the cooking.

Chicken cooking time formula:
1 pounds – 40 min
2 pounds – 60 min
Every extra pound add 10 min
*400f for the whole time. ignor buzzer bip after 15 first min.

Egg cooking time formula:
Soft egg – 5 min
Hard egg – 11 min